The Smartphone-App is the counterpart to the RemoteKey application on your computer.
To add/register a new computer in your app, you only have to scan a QR-Code or enter a configuration text.
You can give every entry a nickname, to make it easier to identify them.
If you need a break from entries but still want to keep them, you can make them "silent" and you will no be get an notification. Even so you get not notification, the app does still operation and you can reply to requests.